Olenna sits next to 3 phonetic neighbors — Elena, Ellena, and Alena are the closest matches by sound. Most share Olenna's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"torch, shining light"
"hill, mound"
"other wealth"
"gracious, favored by God"
"ewe, gentle one (from Rachel root)"
"breath of life"
"full of goodness"
"lake, waterfall, pool"
"child of light"
"source of joy, father's delight"
"life of Zeus, born of Zeus"
"heavenly, sky royalty"
"airy, free-spirited"
"bright one"
"king's meadow, royal clearing"
"plaything (original Latin sense)"
"symbol of peace and wisdom"
"feminine form of Jacques (James)"
"divine healer"
"variant of Ailey, noble kind"
"lake, waterfall"
Similar sound: These names share phonetic patterns with Olenna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Olenna.
Rhythm: Olenna is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.